Carbon Steel hex nut 1.Delivery time: 45days 2.OEM: manufacturer ... B18.2.1and ISO standard. 2. Material: Carbon steel.3. Grade of hex nut: Grade 4.8, Grade6.8, Grade8.8, Grade10.9 ... NutSpeicifications:M3-M48; 1/4''-1-1/2''Material:Carbon steel, Q195, 35KNut Grade:Class4.8, 6.8, 8.8, 10.8and12 ... .9; inch grade:gr2 and gr5Surface treatment:Plain, zinc plated, yellow zinc plated, ...